nextcloud /
server
| Total Complexity | 253 |
| Total Lines | 1254 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| Bugs | 0 | Features | 0 |
Complex classes like OC_Image often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use OC_Image, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 48 | class OC_Image implements \OCP\IImage { |
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| 49 | |||
| 50 | // Default memory limit for images to load (128 MBytes). |
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| 51 | protected const DEFAULT_MEMORY_LIMIT = 128; |
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| 52 | |||
| 53 | /** @var false|resource|\GdImage */ |
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| 54 | protected $resource = false; // tmp resource. |
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| 55 | /** @var int */ |
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| 56 | protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident. |
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| 57 | /** @var string */ |
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| 58 | protected $mimeType = 'image/png'; // Default to png |
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| 59 | /** @var int */ |
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| 60 | protected $bitDepth = 24; |
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| 61 | /** @var null|string */ |
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| 62 | protected $filePath = null; |
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| 63 | /** @var finfo */ |
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| 64 | private $fileInfo; |
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| 65 | /** @var \OCP\ILogger */ |
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| 66 | private $logger; |
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| 67 | /** @var \OCP\IConfig */ |
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| 68 | private $config; |
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| 69 | /** @var array */ |
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| 70 | private $exif; |
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| 71 | |||
| 72 | /** |
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| 73 | * Constructor. |
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| 74 | * |
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| 75 | * @param resource|string|\GdImage $imageRef The path to a local file, a base64 encoded string or a resource created by |
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| 76 | * an imagecreate* function. |
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| 77 | * @param \OCP\ILogger $logger |
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| 78 | * @param \OCP\IConfig $config |
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| 79 | * @throws \InvalidArgumentException in case the $imageRef parameter is not null |
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| 80 | */ |
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| 81 | public function __construct($imageRef = null, \OCP\ILogger $logger = null, \OCP\IConfig $config = null) { |
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| 82 | $this->logger = $logger; |
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| 83 | if ($logger === null) { |
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| 84 | $this->logger = \OC::$server->getLogger(); |
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| 85 | } |
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| 86 | $this->config = $config; |
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| 87 | if ($config === null) { |
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| 88 | $this->config = \OC::$server->getConfig(); |
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| 89 | } |
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| 90 | |||
| 91 | if (\OC_Util::fileInfoLoaded()) { |
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| 92 | $this->fileInfo = new finfo(FILEINFO_MIME_TYPE); |
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| 93 | } |
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| 94 | |||
| 95 | if ($imageRef !== null) { |
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| 96 | throw new \InvalidArgumentException('The first parameter in the constructor is not supported anymore. Please use any of the load* methods of the image object to load an image.'); |
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| 97 | } |
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| 98 | } |
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| 99 | |||
| 100 | /** |
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| 101 | * Determine whether the object contains an image resource. |
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| 102 | * |
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| 103 | * @return bool |
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| 104 | */ |
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| 105 | public function valid() { |
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| 106 | if (is_resource($this->resource)) { |
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| 107 | return true; |
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| 108 | } |
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| 109 | if (is_object($this->resource) && get_class($this->resource) === \GdImage::class) { |
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| 110 | return true; |
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| 111 | } |
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| 112 | |||
| 113 | return false; |
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| 114 | } |
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| 115 | |||
| 116 | /** |
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| 117 | * Returns the MIME type of the image or an empty string if no image is loaded. |
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| 118 | * |
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| 119 | * @return string |
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| 120 | */ |
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| 121 | public function mimeType() { |
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| 122 | return $this->valid() ? $this->mimeType : ''; |
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| 123 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * Returns the width of the image or -1 if no image is loaded. |
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| 127 | * |
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| 128 | * @return int |
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| 129 | */ |
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| 130 | public function width() { |
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| 131 | if ($this->valid()) { |
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| 132 | $width = imagesx($this->resource); |
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| 133 | if ($width !== false) { |
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| 134 | return $width; |
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| 135 | } |
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| 136 | } |
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| 137 | return -1; |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * Returns the height of the image or -1 if no image is loaded. |
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| 142 | * |
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| 143 | * @return int |
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| 144 | */ |
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| 145 | public function height() { |
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| 146 | if ($this->valid()) { |
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| 147 | $height = imagesy($this->resource); |
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| 148 | if ($height !== false) { |
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| 149 | return $height; |
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| 150 | } |
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| 151 | } |
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| 152 | return -1; |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * Returns the width when the image orientation is top-left. |
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| 157 | * |
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| 158 | * @return int |
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| 159 | */ |
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| 160 | public function widthTopLeft() { |
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| 161 | $o = $this->getOrientation(); |
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| 162 | $this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, ['app' => 'core']); |
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| 163 | switch ($o) { |
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| 164 | case -1: |
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| 165 | case 1: |
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| 166 | case 2: // Not tested |
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| 167 | case 3: |
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| 168 | case 4: // Not tested |
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| 169 | return $this->width(); |
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| 170 | case 5: // Not tested |
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| 171 | case 6: |
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| 172 | case 7: // Not tested |
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| 173 | case 8: |
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| 174 | return $this->height(); |
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| 175 | } |
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| 176 | return $this->width(); |
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| 177 | } |
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| 178 | |||
| 179 | /** |
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| 180 | * Returns the height when the image orientation is top-left. |
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| 181 | * |
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| 182 | * @return int |
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| 183 | */ |
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| 184 | public function heightTopLeft() { |
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| 185 | $o = $this->getOrientation(); |
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| 186 | $this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, ['app' => 'core']); |
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| 187 | switch ($o) { |
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| 188 | case -1: |
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| 189 | case 1: |
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| 190 | case 2: // Not tested |
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| 191 | case 3: |
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| 192 | case 4: // Not tested |
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| 193 | return $this->height(); |
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| 194 | case 5: // Not tested |
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| 195 | case 6: |
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| 196 | case 7: // Not tested |
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| 197 | case 8: |
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| 198 | return $this->width(); |
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| 199 | } |
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| 200 | return $this->height(); |
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| 201 | } |
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| 202 | |||
| 203 | /** |
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| 204 | * Outputs the image. |
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| 205 | * |
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| 206 | * @param string $mimeType |
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| 207 | * @return bool |
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| 208 | */ |
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| 209 | public function show($mimeType = null) { |
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| 210 | if ($mimeType === null) { |
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| 211 | $mimeType = $this->mimeType(); |
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| 212 | } |
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| 213 | header('Content-Type: ' . $mimeType); |
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| 214 | return $this->_output(null, $mimeType); |
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| 215 | } |
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| 216 | |||
| 217 | /** |
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| 218 | * Saves the image. |
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| 219 | * |
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| 220 | * @param string $filePath |
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| 221 | * @param string $mimeType |
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| 222 | * @return bool |
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| 223 | */ |
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| 224 | |||
| 225 | public function save($filePath = null, $mimeType = null) { |
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| 226 | if ($mimeType === null) { |
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| 227 | $mimeType = $this->mimeType(); |
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| 228 | } |
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| 229 | if ($filePath === null) { |
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| 230 | if ($this->filePath === null) { |
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| 231 | $this->logger->error(__METHOD__ . '(): called with no path.', ['app' => 'core']); |
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| 232 | return false; |
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| 233 | } else { |
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| 234 | $filePath = $this->filePath; |
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| 235 | } |
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| 236 | } |
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| 237 | return $this->_output($filePath, $mimeType); |
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| 238 | } |
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| 239 | |||
| 240 | /** |
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| 241 | * Outputs/saves the image. |
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| 242 | * |
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| 243 | * @param string $filePath |
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| 244 | * @param string $mimeType |
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| 245 | * @return bool |
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| 246 | * @throws Exception |
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| 247 | */ |
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| 248 | private function _output($filePath = null, $mimeType = null) { |
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| 249 | if ($filePath) { |
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| 250 | if (!file_exists(dirname($filePath))) { |
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| 251 | mkdir(dirname($filePath), 0777, true); |
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| 252 | } |
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| 253 | $isWritable = is_writable(dirname($filePath)); |
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| 254 | if (!$isWritable) { |
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| 255 | $this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', ['app' => 'core']); |
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| 256 | return false; |
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| 257 | } elseif ($isWritable && file_exists($filePath) && !is_writable($filePath)) { |
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| 258 | $this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', ['app' => 'core']); |
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| 259 | return false; |
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| 260 | } |
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| 261 | } |
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| 262 | if (!$this->valid()) { |
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| 263 | return false; |
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| 264 | } |
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| 265 | |||
| 266 | $imageType = $this->imageType; |
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| 267 | if ($mimeType !== null) { |
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| 268 | switch ($mimeType) { |
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| 269 | case 'image/gif': |
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| 270 | $imageType = IMAGETYPE_GIF; |
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| 271 | break; |
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| 272 | case 'image/jpeg': |
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| 273 | $imageType = IMAGETYPE_JPEG; |
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| 274 | break; |
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| 275 | case 'image/png': |
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| 276 | $imageType = IMAGETYPE_PNG; |
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| 277 | break; |
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| 278 | case 'image/x-xbitmap': |
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| 279 | $imageType = IMAGETYPE_XBM; |
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| 280 | break; |
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| 281 | case 'image/bmp': |
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| 282 | case 'image/x-ms-bmp': |
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| 283 | $imageType = IMAGETYPE_BMP; |
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| 284 | break; |
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| 285 | default: |
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| 286 | throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format'); |
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| 287 | } |
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| 288 | } |
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| 289 | |||
| 290 | switch ($imageType) { |
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| 291 | case IMAGETYPE_GIF: |
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| 292 | $retVal = imagegif($this->resource, $filePath); |
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| 293 | break; |
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| 294 | case IMAGETYPE_JPEG: |
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| 295 | $retVal = imagejpeg($this->resource, $filePath, $this->getJpegQuality()); |
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| 296 | break; |
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| 297 | case IMAGETYPE_PNG: |
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| 298 | $retVal = imagepng($this->resource, $filePath); |
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| 299 | break; |
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| 300 | case IMAGETYPE_XBM: |
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| 301 | if (function_exists('imagexbm')) { |
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| 302 | $retVal = imagexbm($this->resource, $filePath); |
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| 303 | } else { |
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| 304 | throw new Exception('\OC_Image::_output(): imagexbm() is not supported.'); |
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| 305 | } |
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| 306 | |||
| 307 | break; |
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| 308 | case IMAGETYPE_WBMP: |
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| 309 | $retVal = imagewbmp($this->resource, $filePath); |
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| 310 | break; |
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| 311 | case IMAGETYPE_BMP: |
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| 312 | $retVal = imagebmp($this->resource, $filePath, $this->bitDepth); |
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|
Bug
introduced
by
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| 313 | break; |
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| 314 | default: |
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| 315 | $retVal = imagepng($this->resource, $filePath); |
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| 316 | } |
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| 317 | return $retVal; |
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| 318 | } |
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| 319 | |||
| 320 | /** |
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| 321 | * Prints the image when called as $image(). |
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| 322 | */ |
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| 323 | public function __invoke() { |
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| 324 | return $this->show(); |
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| 325 | } |
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| 326 | |||
| 327 | /** |
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| 328 | * @param resource|\GdImage $resource |
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| 329 | * @throws \InvalidArgumentException in case the supplied resource does not have the type "gd" |
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| 330 | */ |
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| 331 | public function setResource($resource) { |
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| 332 | // For PHP<8 |
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| 333 | if (is_resource($resource) && get_resource_type($resource) === 'gd') { |
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| 334 | $this->resource = $resource; |
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| 335 | return; |
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| 336 | } |
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| 337 | // PHP 8 has real objects for GD stuff |
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| 338 | if (is_object($resource) && get_class($resource) === \GdImage::class) { |
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| 339 | $this->resource = $resource; |
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| 340 | return; |
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| 341 | } |
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| 342 | throw new \InvalidArgumentException('Supplied resource is not of type "gd".'); |
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| 343 | } |
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| 344 | |||
| 345 | /** |
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| 346 | * @return false|resource|\GdImage Returns the image resource if any |
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| 347 | */ |
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| 348 | public function resource() { |
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| 349 | return $this->resource; |
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| 350 | } |
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| 351 | |||
| 352 | /** |
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| 353 | * @return string Returns the mimetype of the data. Returns the empty string |
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| 354 | * if the data is not valid. |
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| 355 | */ |
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| 356 | public function dataMimeType() { |
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| 357 | if (!$this->valid()) { |
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| 358 | return ''; |
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| 359 | } |
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| 360 | |||
| 361 | switch ($this->mimeType) { |
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| 362 | case 'image/png': |
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| 363 | case 'image/jpeg': |
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| 364 | case 'image/gif': |
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| 365 | return $this->mimeType; |
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| 366 | default: |
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| 367 | return 'image/png'; |
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| 368 | } |
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| 369 | } |
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| 370 | |||
| 371 | /** |
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| 372 | * @return null|string Returns the raw image data. |
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| 373 | */ |
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| 374 | public function data() { |
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| 375 | if (!$this->valid()) { |
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| 376 | return null; |
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| 377 | } |
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| 378 | ob_start(); |
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| 379 | switch ($this->mimeType) { |
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| 380 | case "image/png": |
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| 381 | $res = imagepng($this->resource); |
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| 382 | break; |
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| 383 | case "image/jpeg": |
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| 384 | $quality = $this->getJpegQuality(); |
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| 385 | if ($quality !== null) { |
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| 386 | $res = imagejpeg($this->resource, null, $quality); |
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| 387 | } else { |
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| 388 | $res = imagejpeg($this->resource); |
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| 389 | } |
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| 390 | break; |
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| 391 | case "image/gif": |
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| 392 | $res = imagegif($this->resource); |
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| 393 | break; |
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| 394 | default: |
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| 395 | $res = imagepng($this->resource); |
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| 396 | $this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', ['app' => 'core']); |
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| 397 | break; |
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| 398 | } |
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| 399 | if (!$res) { |
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| 400 | $this->logger->error('OC_Image->data. Error getting image data.', ['app' => 'core']); |
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| 401 | } |
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| 402 | return ob_get_clean(); |
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| 403 | } |
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| 404 | |||
| 405 | /** |
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| 406 | * @return string - base64 encoded, which is suitable for embedding in a VCard. |
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| 407 | */ |
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| 408 | public function __toString() { |
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| 409 | return base64_encode($this->data()); |
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| 410 | } |
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| 411 | |||
| 412 | /** |
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| 413 | * @return int|null |
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| 414 | */ |
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| 415 | protected function getJpegQuality() { |
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| 416 | $quality = $this->config->getAppValue('preview', 'jpeg_quality', 90); |
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| 417 | if ($quality !== null) { |
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| 418 | $quality = min(100, max(10, (int) $quality)); |
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| 419 | } |
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| 420 | return $quality; |
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| 421 | } |
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| 422 | |||
| 423 | /** |
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| 424 | * (I'm open for suggestions on better method name ;) |
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| 425 | * Get the orientation based on EXIF data. |
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| 426 | * |
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| 427 | * @return int The orientation or -1 if no EXIF data is available. |
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| 428 | */ |
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| 429 | public function getOrientation() { |
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| 430 | if ($this->exif !== null) { |
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| 431 | return $this->exif['Orientation']; |
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| 432 | } |
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| 433 | |||
| 434 | if ($this->imageType !== IMAGETYPE_JPEG) { |
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| 435 | $this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', ['app' => 'core']); |
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| 436 | return -1; |
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| 437 | } |
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| 438 | if (!is_callable('exif_read_data')) { |
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| 439 | $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
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| 440 | return -1; |
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| 441 | } |
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| 442 | if (!$this->valid()) { |
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| 443 | $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
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| 444 | return -1; |
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| 445 | } |
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| 446 | if (is_null($this->filePath) || !is_readable($this->filePath)) { |
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| 447 | $this->logger->debug('OC_Image->fixOrientation() No readable file path set.', ['app' => 'core']); |
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| 448 | return -1; |
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| 449 | } |
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| 450 | $exif = @exif_read_data($this->filePath, 'IFD0'); |
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| 451 | if (!$exif) { |
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| 452 | return -1; |
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| 453 | } |
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| 454 | if (!isset($exif['Orientation'])) { |
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| 455 | return -1; |
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| 456 | } |
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| 457 | $this->exif = $exif; |
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| 458 | return $exif['Orientation']; |
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| 459 | } |
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| 460 | |||
| 461 | public function readExif($data) { |
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| 462 | if (!is_callable('exif_read_data')) { |
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| 463 | $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']); |
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| 464 | return; |
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| 465 | } |
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| 466 | if (!$this->valid()) { |
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| 467 | $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']); |
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| 468 | return; |
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| 469 | } |
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| 470 | |||
| 471 | $exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data)); |
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| 472 | if (!$exif) { |
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| 473 | return; |
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| 474 | } |
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| 475 | if (!isset($exif['Orientation'])) { |
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| 476 | return; |
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| 477 | } |
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| 478 | $this->exif = $exif; |
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| 479 | } |
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| 480 | |||
| 481 | /** |
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| 482 | * (I'm open for suggestions on better method name ;) |
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| 483 | * Fixes orientation based on EXIF data. |
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| 484 | * |
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| 485 | * @return bool |
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| 486 | */ |
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| 487 | public function fixOrientation() { |
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| 488 | if (!$this->valid()) { |
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| 489 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
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| 490 | return false; |
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| 491 | } |
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| 492 | $o = $this->getOrientation(); |
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| 493 | $this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, ['app' => 'core']); |
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| 494 | $rotate = 0; |
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| 495 | $flip = false; |
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| 496 | switch ($o) { |
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| 497 | case -1: |
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| 498 | return false; //Nothing to fix |
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| 499 | case 1: |
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| 500 | $rotate = 0; |
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| 501 | break; |
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| 502 | case 2: |
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| 503 | $rotate = 0; |
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| 504 | $flip = true; |
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| 505 | break; |
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| 506 | case 3: |
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| 507 | $rotate = 180; |
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| 508 | break; |
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| 509 | case 4: |
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| 510 | $rotate = 180; |
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| 511 | $flip = true; |
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| 512 | break; |
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| 513 | case 5: |
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| 514 | $rotate = 90; |
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| 515 | $flip = true; |
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| 516 | break; |
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| 517 | case 6: |
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| 518 | $rotate = 270; |
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| 519 | break; |
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| 520 | case 7: |
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| 521 | $rotate = 270; |
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| 522 | $flip = true; |
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| 523 | break; |
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| 524 | case 8: |
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| 525 | $rotate = 90; |
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| 526 | break; |
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| 527 | } |
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| 528 | if ($flip && function_exists('imageflip')) { |
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| 529 | imageflip($this->resource, IMG_FLIP_HORIZONTAL); |
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| 530 | } |
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| 531 | if ($rotate) { |
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| 532 | $res = imagerotate($this->resource, $rotate, 0); |
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| 533 | if ($res) { |
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| 534 | if (imagealphablending($res, true)) { |
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| 535 | if (imagesavealpha($res, true)) { |
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| 536 | imagedestroy($this->resource); |
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| 537 | $this->resource = $res; |
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| 538 | return true; |
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| 539 | } else { |
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| 540 | $this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', ['app' => 'core']); |
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| 541 | return false; |
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| 542 | } |
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| 543 | } else { |
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| 544 | $this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', ['app' => 'core']); |
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| 545 | return false; |
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| 546 | } |
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| 547 | } else { |
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| 548 | $this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', ['app' => 'core']); |
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| 549 | return false; |
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| 550 | } |
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| 551 | } |
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| 552 | return false; |
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| 553 | } |
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| 554 | |||
| 555 | /** |
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| 556 | * Loads an image from an open file handle. |
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| 557 | * It is the responsibility of the caller to position the pointer at the correct place and to close the handle again. |
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| 558 | * |
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| 559 | * @param resource $handle |
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| 560 | * @return resource|\GdImage|false An image resource or false on error |
||
| 561 | */ |
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| 562 | public function loadFromFileHandle($handle) { |
||
| 563 | $contents = stream_get_contents($handle); |
||
| 564 | if ($this->loadFromData($contents)) { |
||
| 565 | return $this->resource; |
||
| 566 | } |
||
| 567 | return false; |
||
| 568 | } |
||
| 569 | |||
| 570 | /** |
||
| 571 | * Check if allocating an image with the given size is allowed. |
||
| 572 | * |
||
| 573 | * @param int $width The image width. |
||
| 574 | * @param int $height The image height. |
||
| 575 | * @return bool true if allocating is allowed, false otherwise |
||
| 576 | */ |
||
| 577 | private function checkImageMemory($width, $height) { |
||
| 578 | $memory_limit = $this->config->getSystemValueInt('preview_max_memory', self::DEFAULT_MEMORY_LIMIT); |
||
| 579 | if ($memory_limit < 0) { |
||
| 580 | // Not limited. |
||
| 581 | return true; |
||
| 582 | } |
||
| 583 | |||
| 584 | // Assume 32 bits per pixel. |
||
| 585 | if ($width * $height * 4 > $memory_limit * 1024 * 1024) { |
||
| 586 | $this->logger->debug('Image size of ' . $width . 'x' . $height . ' would exceed allowed memory limit of ' . $memory_limit); |
||
| 587 | return false; |
||
| 588 | } |
||
| 589 | |||
| 590 | return true; |
||
| 591 | } |
||
| 592 | |||
| 593 | /** |
||
| 594 | * Check if loading an image file from the given path is allowed. |
||
| 595 | * |
||
| 596 | * @param string $path The path to a local file. |
||
| 597 | * @return bool true if allocating is allowed, false otherwise |
||
| 598 | */ |
||
| 599 | private function checkImageSize($path) { |
||
| 600 | $size = getimagesize($path); |
||
| 601 | if (!$size) { |
||
| 602 | return true; |
||
| 603 | } |
||
| 604 | |||
| 605 | $width = $size[0]; |
||
| 606 | $height = $size[1]; |
||
| 607 | if (!$this->checkImageMemory($width, $height)) { |
||
| 608 | return false; |
||
| 609 | } |
||
| 610 | |||
| 611 | return true; |
||
| 612 | } |
||
| 613 | |||
| 614 | /** |
||
| 615 | * Check if loading an image from the given data is allowed. |
||
| 616 | * |
||
| 617 | * @param string $data A string of image data as read from a file. |
||
| 618 | * @return bool true if allocating is allowed, false otherwise |
||
| 619 | */ |
||
| 620 | private function checkImageDataSize($data) { |
||
| 621 | $size = getimagesizefromstring($data); |
||
| 622 | if (!$size) { |
||
| 623 | return true; |
||
| 624 | } |
||
| 625 | |||
| 626 | $width = $size[0]; |
||
| 627 | $height = $size[1]; |
||
| 628 | if (!$this->checkImageMemory($width, $height)) { |
||
| 629 | return false; |
||
| 630 | } |
||
| 631 | |||
| 632 | return true; |
||
| 633 | } |
||
| 634 | |||
| 635 | /** |
||
| 636 | * Loads an image from a local file. |
||
| 637 | * |
||
| 638 | * @param bool|string $imagePath The path to a local file. |
||
| 639 | * @return bool|resource|\GdImage An image resource or false on error |
||
| 640 | */ |
||
| 641 | public function loadFromFile($imagePath = false) { |
||
| 642 | // exif_imagetype throws "read error!" if file is less than 12 byte |
||
| 643 | if (is_bool($imagePath) || !@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) { |
||
| 644 | return false; |
||
| 645 | } |
||
| 646 | $iType = exif_imagetype($imagePath); |
||
| 647 | switch ($iType) { |
||
| 648 | case IMAGETYPE_GIF: |
||
| 649 | if (imagetypes() & IMG_GIF) { |
||
| 650 | if (!$this->checkImageSize($imagePath)) { |
||
| 651 | return false; |
||
| 652 | } |
||
| 653 | $this->resource = imagecreatefromgif($imagePath); |
||
| 654 | if ($this->resource) { |
||
| 655 | // Preserve transparency |
||
| 656 | imagealphablending($this->resource, true); |
||
| 657 | imagesavealpha($this->resource, true); |
||
| 658 | } else { |
||
| 659 | $this->logger->debug('OC_Image->loadFromFile, GIF image not valid: ' . $imagePath, ['app' => 'core']); |
||
| 660 | } |
||
| 661 | } else { |
||
| 662 | $this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 663 | } |
||
| 664 | break; |
||
| 665 | case IMAGETYPE_JPEG: |
||
| 666 | if (imagetypes() & IMG_JPG) { |
||
| 667 | if (!$this->checkImageSize($imagePath)) { |
||
| 668 | return false; |
||
| 669 | } |
||
| 670 | if (getimagesize($imagePath) !== false) { |
||
| 671 | $this->resource = @imagecreatefromjpeg($imagePath); |
||
| 672 | } else { |
||
| 673 | $this->logger->debug('OC_Image->loadFromFile, JPG image not valid: ' . $imagePath, ['app' => 'core']); |
||
| 674 | } |
||
| 675 | } else { |
||
| 676 | $this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 677 | } |
||
| 678 | break; |
||
| 679 | case IMAGETYPE_PNG: |
||
| 680 | if (imagetypes() & IMG_PNG) { |
||
| 681 | if (!$this->checkImageSize($imagePath)) { |
||
| 682 | return false; |
||
| 683 | } |
||
| 684 | $this->resource = @imagecreatefrompng($imagePath); |
||
| 685 | if ($this->resource) { |
||
| 686 | // Preserve transparency |
||
| 687 | imagealphablending($this->resource, true); |
||
| 688 | imagesavealpha($this->resource, true); |
||
| 689 | } else { |
||
| 690 | $this->logger->debug('OC_Image->loadFromFile, PNG image not valid: ' . $imagePath, ['app' => 'core']); |
||
| 691 | } |
||
| 692 | } else { |
||
| 693 | $this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 694 | } |
||
| 695 | break; |
||
| 696 | case IMAGETYPE_XBM: |
||
| 697 | if (imagetypes() & IMG_XPM) { |
||
| 698 | if (!$this->checkImageSize($imagePath)) { |
||
| 699 | return false; |
||
| 700 | } |
||
| 701 | $this->resource = @imagecreatefromxbm($imagePath); |
||
| 702 | } else { |
||
| 703 | $this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 704 | } |
||
| 705 | break; |
||
| 706 | case IMAGETYPE_WBMP: |
||
| 707 | if (imagetypes() & IMG_WBMP) { |
||
| 708 | if (!$this->checkImageSize($imagePath)) { |
||
| 709 | return false; |
||
| 710 | } |
||
| 711 | $this->resource = @imagecreatefromwbmp($imagePath); |
||
| 712 | } else { |
||
| 713 | $this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 714 | } |
||
| 715 | break; |
||
| 716 | case IMAGETYPE_BMP: |
||
| 717 | $this->resource = $this->imagecreatefrombmp($imagePath); |
||
| 718 | break; |
||
| 719 | case IMAGETYPE_WEBP: |
||
| 720 | if (imagetypes() & IMG_WEBP) { |
||
| 721 | if (!$this->checkImageSize($imagePath)) { |
||
| 722 | return false; |
||
| 723 | } |
||
| 724 | $this->resource = @imagecreatefromwebp($imagePath); |
||
| 725 | } else { |
||
| 726 | $this->logger->debug('OC_Image->loadFromFile, webp images not supported: ' . $imagePath, ['app' => 'core']); |
||
| 727 | } |
||
| 728 | break; |
||
| 729 | /* |
||
| 730 | case IMAGETYPE_TIFF_II: // (intel byte order) |
||
| 731 | break; |
||
| 732 | case IMAGETYPE_TIFF_MM: // (motorola byte order) |
||
| 733 | break; |
||
| 734 | case IMAGETYPE_JPC: |
||
| 735 | break; |
||
| 736 | case IMAGETYPE_JP2: |
||
| 737 | break; |
||
| 738 | case IMAGETYPE_JPX: |
||
| 739 | break; |
||
| 740 | case IMAGETYPE_JB2: |
||
| 741 | break; |
||
| 742 | case IMAGETYPE_SWC: |
||
| 743 | break; |
||
| 744 | case IMAGETYPE_IFF: |
||
| 745 | break; |
||
| 746 | case IMAGETYPE_ICO: |
||
| 747 | break; |
||
| 748 | case IMAGETYPE_SWF: |
||
| 749 | break; |
||
| 750 | case IMAGETYPE_PSD: |
||
| 751 | break; |
||
| 752 | */ |
||
| 753 | default: |
||
| 754 | |||
| 755 | // this is mostly file created from encrypted file |
||
| 756 | $data = file_get_contents($imagePath); |
||
| 757 | if (!$this->checkImageDataSize($data)) { |
||
| 758 | return false; |
||
| 759 | } |
||
| 760 | $this->resource = imagecreatefromstring($data); |
||
| 761 | $iType = IMAGETYPE_PNG; |
||
| 762 | $this->logger->debug('OC_Image->loadFromFile, Default', ['app' => 'core']); |
||
| 763 | break; |
||
| 764 | } |
||
| 765 | if ($this->valid()) { |
||
| 766 | $this->imageType = $iType; |
||
| 767 | $this->mimeType = image_type_to_mime_type($iType); |
||
| 768 | $this->filePath = $imagePath; |
||
| 769 | } |
||
| 770 | return $this->resource; |
||
| 771 | } |
||
| 772 | |||
| 773 | /** |
||
| 774 | * Loads an image from a string of data. |
||
| 775 | * |
||
| 776 | * @param string $str A string of image data as read from a file. |
||
| 777 | * @return bool|resource|\GdImage An image resource or false on error |
||
| 778 | */ |
||
| 779 | public function loadFromData($str) { |
||
| 780 | if (!is_string($str)) { |
||
| 781 | return false; |
||
| 782 | } |
||
| 783 | if (!$this->checkImageDataSize($str)) { |
||
| 784 | return false; |
||
| 785 | } |
||
| 786 | $this->resource = @imagecreatefromstring($str); |
||
| 787 | if ($this->fileInfo) { |
||
| 788 | $this->mimeType = $this->fileInfo->buffer($str); |
||
| 789 | } |
||
| 790 | if ($this->valid()) { |
||
| 791 | imagealphablending($this->resource, false); |
||
| 792 | imagesavealpha($this->resource, true); |
||
| 793 | } |
||
| 794 | |||
| 795 | if (!$this->resource) { |
||
| 796 | $this->logger->debug('OC_Image->loadFromFile, could not load', ['app' => 'core']); |
||
| 797 | return false; |
||
| 798 | } |
||
| 799 | return $this->resource; |
||
| 800 | } |
||
| 801 | |||
| 802 | /** |
||
| 803 | * Loads an image from a base64 encoded string. |
||
| 804 | * |
||
| 805 | * @param string $str A string base64 encoded string of image data. |
||
| 806 | * @return bool|resource|\GdImage An image resource or false on error |
||
| 807 | */ |
||
| 808 | public function loadFromBase64($str) { |
||
| 809 | if (!is_string($str)) { |
||
| 810 | return false; |
||
| 811 | } |
||
| 812 | $data = base64_decode($str); |
||
| 813 | if ($data) { // try to load from string data |
||
| 814 | if (!$this->checkImageDataSize($data)) { |
||
| 815 | return false; |
||
| 816 | } |
||
| 817 | $this->resource = @imagecreatefromstring($data); |
||
| 818 | if ($this->fileInfo) { |
||
| 819 | $this->mimeType = $this->fileInfo->buffer($data); |
||
| 820 | } |
||
| 821 | if (!$this->resource) { |
||
| 822 | $this->logger->debug('OC_Image->loadFromBase64, could not load', ['app' => 'core']); |
||
| 823 | return false; |
||
| 824 | } |
||
| 825 | return $this->resource; |
||
| 826 | } else { |
||
| 827 | return false; |
||
| 828 | } |
||
| 829 | } |
||
| 830 | |||
| 831 | /** |
||
| 832 | * Create a new image from file or URL |
||
| 833 | * |
||
| 834 | * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm |
||
| 835 | * @version 1.00 |
||
| 836 | * @param string $fileName <p> |
||
| 837 | * Path to the BMP image. |
||
| 838 | * </p> |
||
| 839 | * @return bool|resource|\GdImage an image resource identifier on success, <b>FALSE</b> on errors. |
||
| 840 | */ |
||
| 841 | private function imagecreatefrombmp($fileName) { |
||
| 842 | if (!($fh = fopen($fileName, 'rb'))) { |
||
| 843 | $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, ['app' => 'core']); |
||
| 844 | return false; |
||
| 845 | } |
||
| 846 | // read file header |
||
| 847 | $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14)); |
||
| 848 | // check for bitmap |
||
| 849 | if ($meta['type'] != 19778) { |
||
| 850 | fclose($fh); |
||
| 851 | $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
||
| 852 | return false; |
||
| 853 | } |
||
| 854 | // read image header |
||
| 855 | $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40)); |
||
| 856 | // read additional 16bit header |
||
| 857 | if ($meta['bits'] == 16) { |
||
| 858 | $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12)); |
||
| 859 | } |
||
| 860 | // set bytes and padding |
||
| 861 | $meta['bytes'] = $meta['bits'] / 8; |
||
| 862 | $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call |
||
| 863 | $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4))); |
||
| 864 | if ($meta['decal'] == 4) { |
||
| 865 | $meta['decal'] = 0; |
||
| 866 | } |
||
| 867 | // obtain imagesize |
||
| 868 | if ($meta['imagesize'] < 1) { |
||
| 869 | $meta['imagesize'] = $meta['filesize'] - $meta['offset']; |
||
| 870 | // in rare cases filesize is equal to offset so we need to read physical size |
||
| 871 | if ($meta['imagesize'] < 1) { |
||
| 872 | $meta['imagesize'] = @filesize($fileName) - $meta['offset']; |
||
| 873 | if ($meta['imagesize'] < 1) { |
||
| 874 | fclose($fh); |
||
| 875 | $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', ['app' => 'core']); |
||
| 876 | return false; |
||
| 877 | } |
||
| 878 | } |
||
| 879 | } |
||
| 880 | // calculate colors |
||
| 881 | $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors']; |
||
| 882 | // read color palette |
||
| 883 | $palette = []; |
||
| 884 | if ($meta['bits'] < 16) { |
||
| 885 | $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4)); |
||
| 886 | // in rare cases the color value is signed |
||
| 887 | if ($palette[1] < 0) { |
||
| 888 | foreach ($palette as $i => $color) { |
||
| 889 | $palette[$i] = $color + 16777216; |
||
| 890 | } |
||
| 891 | } |
||
| 892 | } |
||
| 893 | if (!$this->checkImageMemory($meta['width'], $meta['height'])) { |
||
| 894 | fclose($fh); |
||
| 895 | return false; |
||
| 896 | } |
||
| 897 | // create gd image |
||
| 898 | $im = imagecreatetruecolor($meta['width'], $meta['height']); |
||
| 899 | if ($im == false) { |
||
| 900 | fclose($fh); |
||
| 901 | $this->logger->warning( |
||
| 902 | 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'], |
||
| 903 | ['app' => 'core']); |
||
| 904 | return false; |
||
| 905 | } |
||
| 906 | |||
| 907 | $data = fread($fh, $meta['imagesize']); |
||
| 908 | $p = 0; |
||
| 909 | $vide = chr(0); |
||
| 910 | $y = $meta['height'] - 1; |
||
| 911 | $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!'; |
||
| 912 | // loop through the image data beginning with the lower left corner |
||
| 913 | while ($y >= 0) { |
||
| 914 | $x = 0; |
||
| 915 | while ($x < $meta['width']) { |
||
| 916 | switch ($meta['bits']) { |
||
| 917 | case 32: |
||
| 918 | case 24: |
||
| 919 | if (!($part = substr($data, $p, 3))) { |
||
| 920 | $this->logger->warning($error, ['app' => 'core']); |
||
| 921 | return $im; |
||
| 922 | } |
||
| 923 | $color = @unpack('V', $part . $vide); |
||
| 924 | break; |
||
| 925 | case 16: |
||
| 926 | if (!($part = substr($data, $p, 2))) { |
||
| 927 | fclose($fh); |
||
| 928 | $this->logger->warning($error, ['app' => 'core']); |
||
| 929 | return $im; |
||
| 930 | } |
||
| 931 | $color = @unpack('v', $part); |
||
| 932 | $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3); |
||
| 933 | break; |
||
| 934 | case 8: |
||
| 935 | $color = @unpack('n', $vide . ($data[$p] ?? '')); |
||
| 936 | $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
||
| 937 | break; |
||
| 938 | case 4: |
||
| 939 | $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
||
| 940 | $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F; |
||
| 941 | $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
||
| 942 | break; |
||
| 943 | case 1: |
||
| 944 | $color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
||
| 945 | switch (($p * 8) % 8) { |
||
| 946 | case 0: |
||
| 947 | $color[1] = $color[1] >> 7; |
||
| 948 | break; |
||
| 949 | case 1: |
||
| 950 | $color[1] = ($color[1] & 0x40) >> 6; |
||
| 951 | break; |
||
| 952 | case 2: |
||
| 953 | $color[1] = ($color[1] & 0x20) >> 5; |
||
| 954 | break; |
||
| 955 | case 3: |
||
| 956 | $color[1] = ($color[1] & 0x10) >> 4; |
||
| 957 | break; |
||
| 958 | case 4: |
||
| 959 | $color[1] = ($color[1] & 0x8) >> 3; |
||
| 960 | break; |
||
| 961 | case 5: |
||
| 962 | $color[1] = ($color[1] & 0x4) >> 2; |
||
| 963 | break; |
||
| 964 | case 6: |
||
| 965 | $color[1] = ($color[1] & 0x2) >> 1; |
||
| 966 | break; |
||
| 967 | case 7: |
||
| 968 | $color[1] = ($color[1] & 0x1); |
||
| 969 | break; |
||
| 970 | } |
||
| 971 | $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
||
| 972 | break; |
||
| 973 | default: |
||
| 974 | fclose($fh); |
||
| 975 | $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', ['app' => 'core']); |
||
| 976 | return false; |
||
| 977 | } |
||
| 978 | imagesetpixel($im, $x, $y, $color[1]); |
||
| 979 | $x++; |
||
| 980 | $p += $meta['bytes']; |
||
| 981 | } |
||
| 982 | $y--; |
||
| 983 | $p += $meta['decal']; |
||
| 984 | } |
||
| 985 | fclose($fh); |
||
| 986 | return $im; |
||
| 987 | } |
||
| 988 | |||
| 989 | /** |
||
| 990 | * Resizes the image preserving ratio. |
||
| 991 | * |
||
| 992 | * @param integer $maxSize The maximum size of either the width or height. |
||
| 993 | * @return bool |
||
| 994 | */ |
||
| 995 | public function resize($maxSize) { |
||
| 996 | if (!$this->valid()) { |
||
| 997 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 998 | return false; |
||
| 999 | } |
||
| 1000 | $result = $this->resizeNew($maxSize); |
||
| 1001 | imagedestroy($this->resource); |
||
| 1002 | $this->resource = $result; |
||
| 1003 | return $this->valid(); |
||
| 1004 | } |
||
| 1005 | |||
| 1006 | /** |
||
| 1007 | * @param $maxSize |
||
| 1008 | * @return resource|bool|\GdImage |
||
| 1009 | */ |
||
| 1010 | private function resizeNew($maxSize) { |
||
| 1011 | if (!$this->valid()) { |
||
| 1012 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1013 | return false; |
||
| 1014 | } |
||
| 1015 | $widthOrig = imagesx($this->resource); |
||
| 1016 | $heightOrig = imagesy($this->resource); |
||
| 1017 | $ratioOrig = $widthOrig / $heightOrig; |
||
| 1018 | |||
| 1019 | if ($ratioOrig > 1) { |
||
| 1020 | $newHeight = round($maxSize / $ratioOrig); |
||
| 1021 | $newWidth = $maxSize; |
||
| 1022 | } else { |
||
| 1023 | $newWidth = round($maxSize * $ratioOrig); |
||
| 1024 | $newHeight = $maxSize; |
||
| 1025 | } |
||
| 1026 | |||
| 1027 | return $this->preciseResizeNew((int)round($newWidth), (int)round($newHeight)); |
||
| 1028 | } |
||
| 1029 | |||
| 1030 | /** |
||
| 1031 | * @param int $width |
||
| 1032 | * @param int $height |
||
| 1033 | * @return bool |
||
| 1034 | */ |
||
| 1035 | public function preciseResize(int $width, int $height): bool { |
||
| 1036 | if (!$this->valid()) { |
||
| 1037 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1038 | return false; |
||
| 1039 | } |
||
| 1040 | $result = $this->preciseResizeNew($width, $height); |
||
| 1041 | imagedestroy($this->resource); |
||
| 1042 | $this->resource = $result; |
||
| 1043 | return $this->valid(); |
||
| 1044 | } |
||
| 1045 | |||
| 1046 | |||
| 1047 | /** |
||
| 1048 | * @param int $width |
||
| 1049 | * @param int $height |
||
| 1050 | * @return resource|bool|\GdImage |
||
| 1051 | */ |
||
| 1052 | public function preciseResizeNew(int $width, int $height) { |
||
| 1053 | if (!($width > 0) || !($height > 0)) { |
||
| 1054 | $this->logger->info(__METHOD__ . '(): Requested image size not bigger than 0', ['app' => 'core']); |
||
| 1055 | return false; |
||
| 1056 | } |
||
| 1057 | if (!$this->valid()) { |
||
| 1058 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1059 | return false; |
||
| 1060 | } |
||
| 1061 | $widthOrig = imagesx($this->resource); |
||
| 1062 | $heightOrig = imagesy($this->resource); |
||
| 1063 | $process = imagecreatetruecolor($width, $height); |
||
| 1064 | if ($process === false) { |
||
| 1065 | $this->logger->error(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
||
| 1066 | return false; |
||
| 1067 | } |
||
| 1068 | |||
| 1069 | // preserve transparency |
||
| 1070 | if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
||
| 1071 | imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
||
| 1072 | imagealphablending($process, false); |
||
| 1073 | imagesavealpha($process, true); |
||
| 1074 | } |
||
| 1075 | |||
| 1076 | $res = imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig); |
||
| 1077 | if ($res === false) { |
||
| 1078 | $this->logger->error(__METHOD__ . '(): Error re-sampling process image', ['app' => 'core']); |
||
| 1079 | imagedestroy($process); |
||
| 1080 | return false; |
||
| 1081 | } |
||
| 1082 | return $process; |
||
| 1083 | } |
||
| 1084 | |||
| 1085 | /** |
||
| 1086 | * Crops the image to the middle square. If the image is already square it just returns. |
||
| 1087 | * |
||
| 1088 | * @param int $size maximum size for the result (optional) |
||
| 1089 | * @return bool for success or failure |
||
| 1090 | */ |
||
| 1091 | public function centerCrop($size = 0) { |
||
| 1092 | if (!$this->valid()) { |
||
| 1093 | $this->logger->error('OC_Image->centerCrop, No image loaded', ['app' => 'core']); |
||
| 1094 | return false; |
||
| 1095 | } |
||
| 1096 | $widthOrig = imagesx($this->resource); |
||
| 1097 | $heightOrig = imagesy($this->resource); |
||
| 1098 | if ($widthOrig === $heightOrig and $size == 0) { |
||
| 1099 | return true; |
||
| 1100 | } |
||
| 1101 | $ratioOrig = $widthOrig / $heightOrig; |
||
| 1102 | $width = $height = min($widthOrig, $heightOrig); |
||
| 1103 | |||
| 1104 | if ($ratioOrig > 1) { |
||
| 1105 | $x = ($widthOrig / 2) - ($width / 2); |
||
| 1106 | $y = 0; |
||
| 1107 | } else { |
||
| 1108 | $y = ($heightOrig / 2) - ($height / 2); |
||
| 1109 | $x = 0; |
||
| 1110 | } |
||
| 1111 | if ($size > 0) { |
||
| 1112 | $targetWidth = $size; |
||
| 1113 | $targetHeight = $size; |
||
| 1114 | } else { |
||
| 1115 | $targetWidth = $width; |
||
| 1116 | $targetHeight = $height; |
||
| 1117 | } |
||
| 1118 | $process = imagecreatetruecolor($targetWidth, $targetHeight); |
||
| 1119 | if ($process === false) { |
||
| 1120 | $this->logger->error('OC_Image->centerCrop, Error creating true color image', ['app' => 'core']); |
||
| 1121 | return false; |
||
| 1122 | } |
||
| 1123 | |||
| 1124 | // preserve transparency |
||
| 1125 | if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
||
| 1126 | imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
||
| 1127 | imagealphablending($process, false); |
||
| 1128 | imagesavealpha($process, true); |
||
| 1129 | } |
||
| 1130 | |||
| 1131 | imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height); |
||
| 1132 | if ($process === false) { |
||
| 1133 | $this->logger->error('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, ['app' => 'core']); |
||
| 1134 | return false; |
||
| 1135 | } |
||
| 1136 | imagedestroy($this->resource); |
||
| 1137 | $this->resource = $process; |
||
| 1138 | return true; |
||
| 1139 | } |
||
| 1140 | |||
| 1141 | /** |
||
| 1142 | * Crops the image from point $x$y with dimension $wx$h. |
||
| 1143 | * |
||
| 1144 | * @param int $x Horizontal position |
||
| 1145 | * @param int $y Vertical position |
||
| 1146 | * @param int $w Width |
||
| 1147 | * @param int $h Height |
||
| 1148 | * @return bool for success or failure |
||
| 1149 | */ |
||
| 1150 | public function crop(int $x, int $y, int $w, int $h): bool { |
||
| 1151 | if (!$this->valid()) { |
||
| 1152 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1153 | return false; |
||
| 1154 | } |
||
| 1155 | $result = $this->cropNew($x, $y, $w, $h); |
||
| 1156 | imagedestroy($this->resource); |
||
| 1157 | $this->resource = $result; |
||
| 1158 | return $this->valid(); |
||
| 1159 | } |
||
| 1160 | |||
| 1161 | /** |
||
| 1162 | * Crops the image from point $x$y with dimension $wx$h. |
||
| 1163 | * |
||
| 1164 | * @param int $x Horizontal position |
||
| 1165 | * @param int $y Vertical position |
||
| 1166 | * @param int $w Width |
||
| 1167 | * @param int $h Height |
||
| 1168 | * @return resource|\GdImage|false |
||
| 1169 | */ |
||
| 1170 | public function cropNew(int $x, int $y, int $w, int $h) { |
||
| 1171 | if (!$this->valid()) { |
||
| 1172 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1173 | return false; |
||
| 1174 | } |
||
| 1175 | $process = imagecreatetruecolor($w, $h); |
||
| 1176 | if ($process === false) { |
||
| 1177 | $this->logger->error(__METHOD__ . '(): Error creating true color image', ['app' => 'core']); |
||
| 1178 | return false; |
||
| 1179 | } |
||
| 1180 | |||
| 1181 | // preserve transparency |
||
| 1182 | if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
||
| 1183 | imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
||
| 1184 | imagealphablending($process, false); |
||
| 1185 | imagesavealpha($process, true); |
||
| 1186 | } |
||
| 1187 | |||
| 1188 | imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h); |
||
| 1189 | if ($process === false) { |
||
| 1190 | $this->logger->error(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, ['app' => 'core']); |
||
| 1191 | return false; |
||
| 1192 | } |
||
| 1193 | return $process; |
||
| 1194 | } |
||
| 1195 | |||
| 1196 | /** |
||
| 1197 | * Resizes the image to fit within a boundary while preserving ratio. |
||
| 1198 | * |
||
| 1199 | * Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up |
||
| 1200 | * |
||
| 1201 | * @param integer $maxWidth |
||
| 1202 | * @param integer $maxHeight |
||
| 1203 | * @return bool |
||
| 1204 | */ |
||
| 1205 | public function fitIn($maxWidth, $maxHeight) { |
||
| 1219 | } |
||
| 1220 | |||
| 1221 | /** |
||
| 1222 | * Shrinks larger images to fit within specified boundaries while preserving ratio. |
||
| 1223 | * |
||
| 1224 | * @param integer $maxWidth |
||
| 1225 | * @param integer $maxHeight |
||
| 1226 | * @return bool |
||
| 1227 | */ |
||
| 1228 | public function scaleDownToFit($maxWidth, $maxHeight) { |
||
| 1229 | if (!$this->valid()) { |
||
| 1230 | $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']); |
||
| 1231 | return false; |
||
| 1232 | } |
||
| 1233 | $widthOrig = imagesx($this->resource); |
||
| 1234 | $heightOrig = imagesy($this->resource); |
||
| 1235 | |||
| 1236 | if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) { |
||
| 1237 | return $this->fitIn($maxWidth, $maxHeight); |
||
| 1238 | } |
||
| 1239 | |||
| 1240 | return false; |
||
| 1241 | } |
||
| 1242 | |||
| 1243 | public function copy(): IImage { |
||
| 1244 | $image = new OC_Image(null, $this->logger, $this->config); |
||
| 1245 | $image->resource = imagecreatetruecolor($this->width(), $this->height()); |
||
| 1246 | imagecopy( |
||
| 1247 | $image->resource(), |
||
| 1248 | $this->resource(), |
||
| 1249 | 0, |
||
| 1250 | 0, |
||
| 1251 | 0, |
||
| 1252 | 0, |
||
| 1253 | $this->width(), |
||
| 1254 | $this->height() |
||
| 1255 | ); |
||
| 1256 | |||
| 1257 | return $image; |
||
| 1258 | } |
||
| 1259 | |||
| 1260 | public function cropCopy(int $x, int $y, int $w, int $h): IImage { |
||
| 1268 | } |
||
| 1269 | |||
| 1270 | public function preciseResizeCopy(int $width, int $height): IImage { |
||
| 1271 | $image = new OC_Image(null, $this->logger, $this->config); |
||
| 1272 | $image->imageType = $this->imageType; |
||
| 1273 | $image->mimeType = $this->mimeType; |
||
| 1274 | $image->bitDepth = $this->bitDepth; |
||
| 1275 | $image->resource = $this->preciseResizeNew($width, $height); |
||
| 1276 | |||
| 1277 | return $image; |
||
| 1278 | } |
||
| 1279 | |||
| 1280 | public function resizeCopy(int $maxSize): IImage { |
||
| 1281 | $image = new OC_Image(null, $this->logger, $this->config); |
||
| 1282 | $image->imageType = $this->imageType; |
||
| 1283 | $image->mimeType = $this->mimeType; |
||
| 1284 | $image->bitDepth = $this->bitDepth; |
||
| 1285 | $image->resource = $this->resizeNew($maxSize); |
||
| 1286 | |||
| 1287 | return $image; |
||
| 1288 | } |
||
| 1289 | |||
| 1290 | /** |
||
| 1291 | * Destroys the current image and resets the object |
||
| 1292 | */ |
||
| 1293 | public function destroy() { |
||
| 1298 | } |
||
| 1299 | |||
| 1300 | public function __destruct() { |
||
| 1301 | $this->destroy(); |
||
| 1302 | } |
||
| 1303 | } |
||
| 1304 | |||
| 1305 | if (!function_exists('imagebmp')) { |
||
| 1306 | /** |
||
| 1307 | * Output a BMP image to either the browser or a file |
||
| 1308 | * |
||
| 1309 | * @link http://www.ugia.cn/wp-data/imagebmp.php |
||
| 1310 | * @author legend <[email protected]> |
||
| 1311 | * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm |
||
| 1312 | * @author mgutt <[email protected]> |
||
| 1313 | * @version 1.00 |
||
| 1314 | * @param resource|\GdImage $im |
||
| 1315 | * @param string $fileName [optional] <p>The path to save the file to.</p> |
||
| 1316 | * @param int $bit [optional] <p>Bit depth, (default is 24).</p> |
||
| 1317 | * @param int $compression [optional] |
||
| 1318 | * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
||
| 1319 | */ |
||
| 1320 | function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) { |
||
| 1321 | if (!in_array($bit, [1, 4, 8, 16, 24, 32])) { |
||
| 1322 | $bit = 24; |
||
| 1323 | } elseif ($bit == 32) { |
||
| 1324 | $bit = 24; |
||
| 1325 | } |
||
| 1437 |
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